The planets and countless other objects revolving around our Sun make up the Solar System<BR><BR>Our Solar System is just one of billions in the vastness of our galaxy, the Milky Way---and the Universe itself contains countless ever-changing galaxies!<BR><BR>As astronomers discover more about these heavenly bodies, including our own planet, Earth, they are also finding further mysteries and extraordinary space puzzles<BR><BR>The 300 amazing photographs and detailed illustrations in this book take you on a whirlwind tour of our Solar System and beyond, while the text and reference sections provide a wealth of essential information